{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-44978", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-21T05:34:56.670Z", "datePublished": "2024-09-04T19:54:29.559Z", "dateUpdated": "2026-08-05T11:37:25.547Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:37:25.547Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Free job before xe_exec_queue_put\n\nFree job depends on job->vm being valid, the last xe_exec_queue_put can\ndestroy the VM. Prevent UAF by freeing job before xe_exec_queue_put.\n\n(cherry picked from commit 32a42c93b74c8ca6d0915ea3eba21bceff53042f)" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerability is reached only through DRM ioctls on the local Intel Xe render node (/dev/dri/renderD*) — XE_EXEC, XE_EXEC_QUEUE_CREATE/DESTROY — requiring an open file descriptor on the device. There is no remote or adjacent-network path to xe_sched_job_destroy().\nAC:L - The attacker controls every input to the bug: they create the VM and exec queue, submit the jobs, and destroy the queue so the final job reference triggers the put-before-free, and can drive the device into the wedged state to hit the fully synchronous kfree path. Where the free is deferred to a workqueue, the attacker owns both sides of the race and can retry indefinitely with heap grooming.\nPR:L - All ioctls on the path are marked DRM_RENDER_ALLOW with no DRM_AUTH, no DRM master requirement, and no capability check, so an ordinary unprivileged user with render-node access (default on desktop distros via logind ACLs, and common in GPU-enabled containers) can trigger it. No root or CAP_SYS_ADMIN is needed.\nUI:N - The attacker triggers the entire sequence from their own process with no victim action required. No file opening, mount, or interaction by another user is involved.\nS:U - The corruption is confined to kernel heap memory managed by the same kernel security authority as the attacking process. No hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - This is a use-after-free of struct xe_exec_queue plus a dereference of the already-freed xe_vm through a dangling pointer, and the attacker can reallocate the freed queue to control the pointer that is then read. Per kernel UAF guidance this yields attacker-influenced kernel memory disclosure.\nI:H - The stale q->width read selects which kmem_cache the job is returned to, so a sprayed replacement object produces a wrong-cache kmem_cache_free() and SLUB freelist corruption — a write primitive leveragable for control-flow hijack and privilege escalation. Per guidance, use-after-free is scored High for integrity.\nA:H - Even unexploited, dereferencing the freed exec queue and freed VM causes a kernel oops or panic, and mismatched slab frees corrupt allocator state leading to later crashes. Any unprivileged user with render-node access can repeat this at will." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/xe/xe_sched_job.c" ], "versions": [ { "version": "dd08ebf6c3525a7ea2186e636df064ea47281987", "lessThan": "98aa0330f200b9b8fb9e1298e006eda57a13351c", "status": "affected", "versionType": "git" }, { "version": "dd08ebf6c3525a7ea2186e636df064ea47281987", "lessThan": "9e7f30563677fbeff62d368d5d2a5ac7aaa9746a", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/xe/xe_sched_job.c" ], "versions": [ { "version": "6.8", "status": "affected" }, { "version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.7", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.10.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.11" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/98aa0330f200b9b8fb9e1298e006eda57a13351c" }, { "url": "https://git.kernel.org/stable/c/9e7f30563677fbeff62d368d5d2a5ac7aaa9746a" } ], "title": "drm/xe: Free job before xe_exec_queue_put", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-44978", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T15:20:40.351052Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-12T17:33:03.653Z" } } ] } }